Tamil Nadu experienced unprecedented floods in November-December 2015, with Chennai bearing the brunt of non-stop rains and inundation paralysing normal life. High sea surface temperatures over the Bay of Bengal, a stationary pressure trough and easterly waves caused this phenomenon.

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The Indian state of Tamil Nadu experienced a series of floods this winter. The city of Chennai was flooded between November 13 and 17 and on December 1, 2015 which persisted well into the second week of December. District after district was inundated—Kanchipuram on December 5; Tirunelveli on December 7; and Thanjavur, Thiruvarur and Nagapattinam on December 8. Cuddalore city and the district remained flooded till December 10. More than 500 people died and over 18 lakh people were displaced....